Desk Service Bell Pro funktioniert nicht

" where the sound will repeat as long as you have the image pressed. You control the speed! * 4 Loud Bell Sounds plus a Gong and a toast glass sound! * "Rapid Mode" enables the selected sound to repeat as long as the image is pressed! * Control the sound repeat speed in "Rapid Mode" with the Speed slider.  Don't want to keep pressing the bell image to get your desired sound? Then select "Rapid Mode!  Desk Service Bell Pro is an entertaining app that simulates the sound of a real Service Bell in addition to 5 other sounds.  Don't want to use a service bell to get the attention you need?  Download the Best Service Bell App on IOS!  Then use a Ship bell, a Boxing Bell, or a Gong!  Press the image in the center of the screen and hear the LOUD corresponding sound! - Use Desk Service Bell Pro to get the necessary attention you need and FAST!